The design and application of a multichannel fiberoptic system for recording (MSR) of dynamic, spectral and energy characteristics of radiation sources in the range of 10-10-10-8 s is considered. Simultaneous recording of radiation characteristics in different areas of the object under study provides extensive information capabilities and ease of operation. The total number of fiber-optic channels is 12, of which 9 are designed to register the dynamics of radiation. The dynamics of the radiation is recorded by a developed multi-channel high-speed electron-optical camera with a resolution of 40 to 200 ps, depending on the type and length of the optical cable. The maximum resolution of the spectral equipment in the range of 500-700 nm is 0.06 nm. Transient processes in electrical and optical channels of radiation detection are considered. The possibilities of using MSR to study the dynamics of luminescence along the discharge channel in gases and semiconductors excited by sub-nanosecond pulses of an electron beam or an electric field are shown. During the studies the dynamics, spectrum and energy of the radiation were simultaneously recorded. The results of experiments and the possibilities of using MSR in the study of high-speed processes are discussed.
Single and combined fiber optic probes for key spectroscopy methods (Raman scattering, Mid IR-absorption, Diffuse NIR-reflection, and auto-fluorescence) were compares to detect malignant tissue in clinical environment. All four methods were tested on cancer diagnostics on biopsies (stomach, colon and kidney) and bioliquids (serum, plasma and urine) of patients.
Multichannel Fiber Optic Probes (MFOP) is new type of accessories’ which can be used for Modern Biophotonics Techniques, based on: UV-VIS- NIR spectroscopy, fluorescent spectroscopy. New simulations program MFOBv.3 for MFOP allow to specify basic reflex light optic value I0 as a function of distance Z[μm] have been developed. MFOBv.3 make possible quick selection and optimization of the probe fiber bundle structure and fibers specification. Designed Reflex probe for endoscopy spectral evaluations include new type of fibers. Fibers with core surrounded by hollow circular guide provide necessary wide numerical aperture. Multimode metal coated fibers used in MFOP for tumor diagnostic in surgery. Symbioses of Microtechnology and new types of fiberoptic allow made smallest Reflex probe 7+1 fibers structure (OD=0.6mm). Designed sensitive electronic system with 405nm/50mW laser synchronized with fluorescent signals measurement device. For tumor diagnostic during stomach surgery created high sensitive endoscopic fiber multichannel probe for special photosensitizer with excitation wavelength 405 nm. Reflex probe provide sensitivity small than 10 microgram photosensitizer for 1 kg biomass. Experimental results for bio liquids and for tissue with laser induced fluorescence diagnostic extended in poster/report.